–Random Verify

v Surface Scan Tests: - checks the drive media for defects.

–Surface Scan (Linear)

–Surface Scan (Aggressive) - this is disabled for normal customer use.

–Surface Scan (Random)

vSMART: - checks the SMART functionality for drives that support SMART.

–Start SMART Self-Test

–Get SMART test results

Other Test Features:

vWrite-Splice Repair - detects and corrects Error Correction Code errors during Verify tests.

vAuto Spin Down - a gradual spin down of the drive platters to avoid damaging the media.

vManufacturer Log - an in-depth manufacturer supported log of errors on the drive.

Multitasking:

To allow simultaneous testing of multiple hard drives whenever possible, the FDAT module is written as a set of multitasking functions. Each drive under test can run the same test or run a different test at the same time. Each subtest is written to handle a single test pass and all test variables are kept track of in a structure unique for each drive . However, when testing IDE drives, FDAT will not perform simultaneous testing of IDE drives that are attached to the same IDE cable. For example, if FDAT is testing four IDE drives on a PC, it will perform simultaneous testing on drives 1 and 3 first (master drives), then perform tests on 2 and 4 (slave drives). FDAT will also perform simultaneous testing on a master and slave that are on separate IDE cables, but will not perform simultaneous tests on a master and slave on the same IDE cable. This generally increases the amount of time needed to test multiple IDE drives. Another limitation of FDAT’S multitasking capability is the use of Ultra DMA (UDMA). Only one drive at a time can access the UDMA channel and the UDMA channel buffer must be kept high in order to maintain a speed advantage over other data transfer modes. In order to use the UDMA channel during testing, users must disable the multitasking feature.

Destructive vs non-destructive testing:

Most of the tests found in FDAT are non-destructive. This means that PCDR will preserve any data that is present on the tested media prior to beginning any destructive operations (i.e. write operations). However, users can run certain tests in destructive mode (i.e. surface scan tests). Destructive tests will speed up testing because FDAT does not preserve the data on the media prior to the test beginning. Unlike non-destructive tests, any data present on the media prior to the test beginning is lost. FDAT allows for enabling or disabling destructive tests, as well as specifying a range of destructive and non-destructive sectors on the tested drive. This is done through the configuration of the FDAT.INI .If destructive and non-destructive ranges somehow overlap, then the overlapped area is considered non-destructive. For example, if users specify both destructive and non-destructive ranges as the same, then the entire drive is tested as non-destructive.

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IBM 8319, 6826, 8317, 8318 manual Other Test Features
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8318, 8317, 6826, 8319 specifications

The IBM 6826, 8318, 8319, and 8317 are part of IBM's storied history in producing innovative computing systems, particularly in the context of enterprise solutions. These models represent a significant evolution in technology, showcasing IBM's commitment to high-performance computing, reliability, and scalability.

The IBM 6826, often recognized for its role in the midrange marketplace, provided businesses with powerful processing capabilities at a relatively affordable price. It was engineered to handle various workloads, from basic transaction processing to more complex applications. One of its key features was its ability to support multiple users simultaneously, making it suitable for medium-sized businesses that required robust computing power without the cost of larger mainframe systems.

Transitioning to the 8318, this model became notable for its advanced server capabilities, integrating improved processing power and memory options. The 8318 was instrumental in supporting critical business applications and offered enhanced reliability. Additionally, it featured new management interfaces that allowed for easier monitoring and maintenance of software and hardware components, which was especially valuable for enterprise environments.

The IBM 8319, a further enhancement, improved scalability and introduced cutting-edge technologies aimed at maximizing performance. This model allowed businesses to scale resources according to demand, making it particularly beneficial during peak operational periods. The 8319 was designed with built-in redundancy features, thereby minimizing downtime and ensuring continuous operations—a vital aspect in today's fast-paced business ecosystem.

Finally, the IBM 8317 served as a versatile solution that catered to various computing needs. It combined the strengths of its predecessors, delivering superior processing speed and excellent storage options. The 8317 was also equipped with advanced networking capabilities, supporting seamless integration within increasingly complex IT infrastructures.

Collectively, these IBM models underscore the company's dedication to technological progression tailored for enterprise requirements. They utilized multiple processing architectures, advanced memory management systems, and user-friendly administration tools, all contributing to their reputation as reliable and efficient computing solutions. As such, they played a critical role in not just shaping IBM’s product lineage but also in influencing the wider landscape of enterprise computing technology.
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